BASIS OF PRESENTATION AND RECENTLY ISSUED ACCOUNTING STANDARDS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Schedule of Research and Development Expense [Line Items]
Research and development	$ 2,528	$ 2,374	$ 7,365	$ 7,968
Research
Schedule of Research and Development Expense [Line Items]
Research and development	313	323	918	1,043
Drug Development
Schedule of Research and Development Expense [Line Items]
Research and development	1,151	1,094	3,327	3,273
Other
Schedule of Research and Development Expense [Line Items]
Research and development	$ 1,063	$ 957	$ 3,120	$ 3,652